/**
* {@inheritdoc}
*/
public function createVariation(ImageFormat $output_format, $quality, ImageDimensions $dimensions = null, ImageCropDimensions $crop_dimensions = null)
{
$src = $this->getTempFile($this->data);
$img = new \Imagick();
$img->setResolution($this->resolution, $this->resolution);
$img->readImage($src);
$img->setIteratorIndex(0);
// Flatten images here helps the encoder to get rid of the black background
// that appears on encoded image files.
$img = $img->flattenImages();
$img->setImageFormat((string) $output_format->value());
$img->setImageCompressionQuality($quality);
if (null !== $crop_dimensions) {
$img->cropImage($crop_dimensions->getWidth(), $crop_dimensions->getHeight(), $crop_dimensions->getX(), $crop_dimensions->getY());
}
if (null !== $dimensions) {
$img->resizeImage($dimensions->getWidth() ?: 0, $dimensions->getHeight() ?: 0, $this->filter, 1, false);
}
return $img->getImageBlob();
}
